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AssigneeSantrade Ltd.
InventorsHerbert Schachner, Heinz Tippmann, Benno Lux, Klas G. Stjernberg, Anders G. Thelin
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A chemical vapor deposition method for the production of a composite body with one or more polycrystalline diamond layers, essentially free of intercrystalline binder phase, on a substrate of one of: (a) metalbonded hardmaterial compound; (b) ceramic material; or (c) a metal or an alloy, whereby the heated substrate is contacted with a gaseous mixture of hydrocarbon or hydrogen, which mixture has been activated by passing it over a tantalum heater heated to a temperature of 1500.degree.-2500.degree. C. Also disclosed is the use of the compound body in tools subjected to mechanical operations.
A chemical vapour deposition (CVD) method for manufacturing a diamond clad composite body by depositing one or, successively, further adherent polycrystalline diamond layers substantially free from intercrystalline binder on (I) a core substrate selected from (a) metal bonded hard metallic compounds, (b) ceramic materials and (c) metals or alloys, said method involving contacting the heated core with an activated gaseous mixture of hydrocarbon and hydrogen, characterized in that said mixture is activated by passing over a tantalum heater to a temperature of 1500.degree. to 2500.degree. C.
Dependencies are inferred from the claim text.